Automobile steering knuckle machining and positioning clamp

Abstract

The utility model provides an automobile steering knuckle processing and positioning fixture, the automobile steering knuckle comprises a main body and a main arm, the processing and positioning fixture comprises a base, a supporting seat, a centering piece, a positioning device and a clamping device, the supporting seat is arranged on the base, the centering piece is arranged inside the supporting seat, the inner wall of the supporting seat is attached to the outer wall of the centering piece, the centering piece is provided with a taper hole, and the clamping device is arranged on the positioning device. The main body is provided with a conical structure, the conical structure extends into the conical hole, the inner wall of the conical hole is attached to the outer wall of the conical structure, an elastic piece is arranged in the supporting seat, one end of the elastic piece abuts against the centering piece, the other end of the elastic piece abuts against the bottom of the supporting seat, the positioning device and the clamping device are arranged on the base, and the positioning device is constructed to be connected with the main arm. The clamping device is used for fixing the body. The automobile steering knuckle extends into the centering piece, self-centering is achieved so as to reduce the positioning error, angular positioning of the steering knuckle is achieved through the positioning device, the situation that the automobile steering knuckle to be machined needs to be manually aligned is avoided, and the clamping efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile steering knuckle processing, especially relates to a positioning fixture for automobile steering knuckle processing. BACKGROUND

[0002] At present, in the automobile manufacturing process, the steering knuckle is a key component connecting the wheel and the suspension system, and its machining precision directly relates to the controllability and safety of the automobile. The first sequence of steering knuckle machining, i.e. blank machining, is a crucial step in the whole machining process. In this step, the accurate positioning of the blank is the prerequisite for ensuring the processing quality. However, this link faces several major difficulties. First of all, the fluctuation of the blank is a problem that cannot be ignored. Due to the unevenness of the material in the casting or forging process, there may be a large inconsistency in the size and shape of the blank. This fluctuation leads to the need for additional measurement and adjustment before processing to ensure that the blank can be accurately positioned on the processing equipment. Secondly, positioning error is another key factor affecting machining precision. When manually clamping the blank, due to the different skill levels and experience of the operators, it may lead to inaccurate clamping position, thereby affecting the machining precision. In addition, the efficiency of manual clamping is low, which cannot meet the needs of mass production. Furthermore, the large deviation in the manual clamping process may cause the workpiece to shift or rotate during processing, thereby affecting the processing quality. This deviation is particularly intolerable in precision machining, as it may cause the size of the workpiece to exceed the tolerance range, or even cause the workpiece to be scrapped.

[0003] The utility model discloses a positioning fixture for automobile steering knuckle processing to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a positioning fixture for automobile steering knuckle processing, aiming at solving the problems of large positioning error and low clamping efficiency in automobile steering knuckle processing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a positioning fixture for automobile steering knuckle processing, the automobile steering knuckle comprising a main body and a main arm, the processing positioning fixture comprising a base, a support seat, a centering piece, a positioning device and a clamping device, the support seat being arranged on the base, the centering piece being arranged inside the support seat, the inner wall of the support seat being in close contact with the outer wall of the centering piece, the centering piece being provided with a tapered hole, the main body being provided with a tapered structure, the tapered structure extending into the tapered hole, the inner wall of the tapered hole being in close contact with the outer wall of the tapered structure, the bottom wall of the automobile steering knuckle being in abutment with the upper end surface of the support seat, the support seat being provided with an elastic piece inside, one end of the elastic piece being in abutment with the centering piece, the other end being in abutment with the bottom of the support seat, the positioning device and the clamping device being arranged on the base, the positioning device being configured to be connected with the main arm, and the clamping device being used for fixing the main body.

[0006] On the basis of the above technical scheme, the automobile steering knuckle machining positioning fixture further comprises a guide limiting column, the guide limiting column is arranged on the side wall of the support seat, is arranged from outside to inside in the support seat, and extends to the centering piece, the centering piece is provided with a limiting groove, and one end of the guide limiting column towards the centering piece is clamped into the limiting groove to limit the centering piece.

[0007] On the basis of the above technical scheme, the support seat is circumferentially provided with a chip removal hole, the centering piece is provided with a chip removal cooperation hole, and the chip removal hole and the chip removal cooperation hole are correspondingly arranged, which is used for discharging waste chips in the automobile steering knuckle machining process.

[0008] On the basis of the above technical scheme, the support seat is provided with a limiting socket, the automobile steering knuckle is provided with a limiting part, the limiting part is clamped into the limiting socket, and the automobile steering knuckle is limited.

[0009] On the basis of the above technical scheme, the bottom of the centering piece is provided with an extension structure, the extension structure extends towards the direction close to the bottom of the support seat, and extends into the elastic piece.

[0010] On the basis of the above technical scheme, the positioning device comprises a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are oppositely arranged, the end of the main arm is provided with a through hole, the first fixed plate and the second fixed plate are both provided with a threaded hole corresponding to the through hole, and a bolt is sequentially arranged in the threaded hole and the through hole to fix the automobile steering knuckle.

[0011] On the basis of the above technical scheme, the number of the positioning devices is two, and the two positioning devices are oppositely arranged.

[0012] On the basis of the above technical scheme, the clamping device comprises a pressing plate and a fixing bolt, the fixing bolt extends to the base after being arranged in one end of the pressing plate and is fixedly connected with the base, the other end of the pressing plate extends to the upper side of the automobile steering knuckle and is constructed to abut against the automobile steering knuckle to clamp the automobile steering knuckle.

[0013] On the basis of the above technical scheme, the pressing plate comprises a first segment, a second segment and a third segment, the first segment is provided with a through hole, the fixing bolt is arranged in the through hole, one end of the second segment is connected with the first segment and the connection forms a bend, the other end extends along the vertical direction and is connected with one end of the third segment and the connection forms a bend, and the other end of the third segment extends along the horizontal direction and abuts against the top wall of the automobile steering knuckle on one side.

[0014] On the basis of the above technical scheme, the other end of the third segment is provided with a circular arc structure, the automobile steering knuckle is provided with a center hole, and the circular arc structure surrounds the center hole.

[0015] Compared with the related art, the automobile steering knuckle machining positioning fixture has the following advantages:

[0016] The utility model discloses a support seat and centering piece are set up, and the automobile steering knuckle of processing is inserted into the centering piece, and the elastic piece is compressed to the gravity action of the automobile steering knuckle of centering piece, and the taper structure outer wall of automobile steering knuckle and the taper hole inner wall of centering piece are inlaid, and the automobile steering knuckle bottom wall and support seat upper end face are in abutment, realize the support positioning effect, and can realize the function of self-centering with centering piece, thereby reducing the positioning error, and the positioning device is connected with the main arm, and the angular positioning of steering knuckle is realized through the position of the main arm of automobile steering knuckle, avoids needing artificial alignment automobile steering knuckle of processing, can improve the clamping efficiency, and the clamping of automobile steering knuckle is carried out with the base of clamping device, thereby fixing the whole automobile steering knuckle, realizes the stable clamping operation, to carry out the subsequent processing process. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description. Obviously, the drawing in the following description is only one embodiment of the utility model, and for those skilled in the art, other embodiment drawings can be obtained according to the provided drawing without creating labor.

[0018] Figure 1 It is the structural schematic diagram of the automobile steering knuckle processing positioning fixture and automobile steering knuckle cooperation provided by the utility model;

[0019] Figure 2 It is the explosion schematic diagram of the automobile steering knuckle processing positioning fixture and automobile steering knuckle cooperation provided by the utility model;

[0020] Figure 3 It is the structural schematic diagram of another automobile steering knuckle processing positioning fixture and automobile steering knuckle cooperation provided by the utility model;

[0021] Figure 4 It is the structural schematic diagram of another automobile steering knuckle processing positioning fixture and automobile steering knuckle cooperation provided by the utility model; Figure 3 The cross section structure schematic diagram of A-A shown in the figure.

[0022] In the figure: 1, automobile steering knuckle; 11, main body; 111, conical structure; 12, main arm; 121, through hole; 13, side arm; 14, limiting part; 15, center hole; 2, machining positioning clamp; 21, base; 22, support seat; 221, elastic piece; 222, chip removal hole; 223, limiting bayonet; 23, centering piece; 231, tapered hole; 232, chip removal matching hole; 233, extension structure; 24, positioning device; 241, first fixed plate; 242, second fixed plate; 243, threaded hole; 244, bolt; 25, clamping device; 251, pressing plate; 252, fixing bolt; 253, first section; 254, second section; 255, third section; 256, circular arc structure. DETAILED DESCRIPTION

[0023] The utility model will be further described below in connection with the drawings and examples:

[0024] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as a limitation of the utility model.

[0025] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be directly connected, or indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0026] In the description of the utility model, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0027] In combination Figures 1-4As shown, the automobile steering knuckle machining positioning clamp provided by the embodiment of the present disclosure comprises a main body 11 and a main arm 12, and the machining positioning clamp 2 comprises a base 21, a supporting seat 22, a centering piece 23, a positioning device 24 and a clamping device 25. The supporting seat 22 is arranged on the base 21, the centering piece 23 is arranged inside the supporting seat 22, the inner wall of the supporting seat 22 is in close contact with the outer wall of the centering piece 23, the centering piece 23 is provided with a tapered hole 231, the main body 11 is provided with a tapered structure 111, the tapered structure 111 extends into the tapered hole 231, the inner wall of the tapered hole 231 is in close contact with the outer wall of the tapered structure 111, the bottom wall of the automobile steering knuckle 1 is in abutment with the upper end surface of the supporting seat 22, the supporting seat 22 is provided with an elastic piece 221 inside, one end of the elastic piece 221 is in abutment with the centering piece 23, and the other end is in abutment with the bottom of the supporting seat 22, the positioning device 24 and the clamping device 25 are arranged on the base 21, the positioning device 24 is configured to be connected with the main arm 12, and the clamping device 25 is used for fixing the main body 11.

[0028] By adopting the automobile steering knuckle machining positioning clamp provided by the embodiment of the present disclosure, the automobile steering knuckle 1 to be machined is inserted into the centering piece 23, the centering piece 23 is compressed by the gravity of the automobile steering knuckle 1, the outer wall of the tapered structure 111 of the automobile steering knuckle 1 is in close contact with the inner wall of the tapered hole 231 of the centering piece 23, the bottom wall of the automobile steering knuckle 1 is in abutment with the upper end surface of the supporting seat 22, the supporting and positioning functions are realized, the self-centering function is realized in cooperation with the centering piece 23, the positioning error is reduced, the positioning device 24 is connected with the main arm 12, the angular positioning of the steering knuckle is realized by positioning the position of the main arm 12 of the automobile steering knuckle 1, manual alignment of the automobile steering knuckle 1 to be machined is avoided, the clamping efficiency is improved, the clamping device 25 cooperates with the base 21 to clamp the automobile steering knuckle 1, thereby fixing the whole automobile steering knuckle 1, realizing stable clamping operation, and the subsequent machining process is carried out.

[0029] Specifically, the taper of the tapered hole 231 of the centering piece 23 is less than or equal to the taper of the tapered structure 111 of the automobile steering knuckle 1, so that the "line contact" is realized between the centering piece 23 and the automobile steering knuckle 1, and the centering effect is more accurate.

[0030] On the basis of the above technical scheme, the automobile steering knuckle machining positioning clamp 2 further comprises a guide limiting column, the guide limiting column is arranged on the side wall of the supporting seat 22, is arranged from outside to inside of the supporting seat 22, extends to the centering piece 23, the centering piece 23 is provided with a limiting groove, and one end of the guide limiting column towards the centering piece 23 is clamped into the limiting groove to limit the centering piece 23.

[0031] When the automobile steering knuckle 1 extends into the centering piece 23, the guide limiting column is clamped into the limiting groove during the process of moving downward to the position where the limiting groove and the guide limiting column are opposite to each other, thereby limiting the movement of the automobile steering knuckle 1 in the up-down direction, and the positioning of the automobile steering knuckle 1 is more stable.

[0032] On the basis of the above technical solution, as shown in Figure 1 and Figure 4 , the support seat 22 is circumferentially provided with a chip removal hole 222, the centering piece 23 is provided with a chip removal matching hole 232, the chip removal hole 222 and the chip removal matching hole 232 are correspondingly arranged, and the chip removal hole 222 is used for discharging waste chips during the machining of the automobile steering knuckle 1.

[0033] Specifically, the number of the chip removal hole 222 and the chip removal matching hole 232 is multiple, the multiple chip removal holes 222 are uniformly distributed on the support seat 22 in the circumferential direction, the multiple chip removal matching holes 232 are uniformly distributed on the centering piece 23 in the circumferential direction, the multiple chip removal holes 222 and the multiple chip removal matching holes 232 are one-to-one correspondingly arranged, and the waste materials generated in the centering piece 23 during the machining of the automobile steering knuckle 1 are discharged to the outside under the action of the centrifugal force.

[0034] On the basis of the above technical solution, as shown in Figure 4 , the support seat 22 is provided with a limiting socket 223, the automobile steering knuckle 1 is provided with a limiting portion 14, and the limiting portion 14 is clamped into the limiting socket 223 to limit the automobile steering knuckle 1.

[0035] Specifically, the automobile steering knuckle 1 further includes a side arm 13, a connecting beam is connected between the side wall and the main body 11, the limiting portion 14 of the automobile steering knuckle 1 can be the connecting beam or other protruding structures on the automobile steering knuckle 1, during the process of moving downward and extending into the centering piece 23, the bottom wall of the automobile steering knuckle 1 moves to abut against the upper end surface of the support seat 22, at this time, the limiting portion 14 moves to the limiting socket 223 of the support seat 22, the limiting portion 14 is clamped with the limiting socket 223, and the limiting portion 14 limits the automobile steering knuckle 1 in the circumferential movement direction relative to the centering piece 23 to a certain extent.

[0036] On the basis of the above technical solution, as shown in Figure 4 , the bottom of the centering piece 23 is provided with an extension structure 233, the extension structure 233 extends towards the direction close to the bottom of the support seat 22 and extends into the elastic member 221. The extension structure 233 can limit the deformation of the elastic member 221 and increase the stability of the elastic member 221.

[0037] On the basis of the above technical solution, as shown in Figure 1 and Figure 3As shown, the positioning device 24 comprises a first fixed plate 241 and a second fixed plate 242, the first fixed plate 241 and the second fixed plate 242 are oppositely arranged, the end of the main arm 12 is provided with a through hole 121, the first fixed plate 241 and the second fixed plate 242 are both provided with a threaded hole 243 corresponding to the through hole 121, and a bolt 244 is sequentially arranged in the threaded hole 243 and the through hole 121 to fix the automobile steering knuckle 1.

[0038] Specifically, the height of the first fixed plate 241 and the second fixed plate 242 can be adjusted, which can be adapted to automobile steering knuckles 1 of various different models and sizes.

[0039] On the basis of the above technical scheme, the number of the positioning device 24 is two, and the two positioning devices 24 are oppositely arranged.

[0040] It can be understood that the two oppositely arranged positioning devices 24 can be adapted to steering knuckles at different positions of the automobile, such as the steering knuckles on the left and right sides of the automobile, and the structures are mirror images.

[0041] On the basis of the above technical scheme, as shown in Figure 3 and Figure 4 The clamping device 25 comprises a pressing plate 251 and a fixing bolt 252, the fixing bolt 252 extends to the base 21 from one end of the pressing plate 251 and is fixedly connected with the base 21, and the other end of the pressing plate 251 extends above the automobile steering knuckle 1 and is configured to abut against the automobile steering knuckle 1 to clamp the automobile steering knuckle 1.

[0042] On the basis of the above technical scheme, as shown in Figure 3 and Figure 4 The pressing plate 251 comprises a first section 253, a second section 254 and a third section 255, the first section 253 is provided with a through hole 121, the fixing bolt 252 is arranged in the through hole 121, one end of the second section 254 is connected with the first section 253 and the connection forms a bend, the other end extends along a vertical direction and is connected with one end of the third section 255 and the connection forms a bend, and the other end of the third section 255 extends along a horizontal direction and abuts against a top wall of the automobile steering knuckle 1 on one side.

[0043] When the pressing plate 251 cooperates with the fixing bolt 252 to clamp the automobile steering knuckle 1, the bottom wall of the third section 255 abuts against the top wall of the automobile steering knuckle 1, and the side of the second section 254 facing the automobile steering knuckle 1 abuts against the side wall of the automobile steering knuckle 1, so that the automobile steering knuckle 1 can be limited in the vertical direction and the horizontal direction at the same time, and the clamping effect is more stable.

[0044] On the basis of the above technical scheme, the other end of the third section 255 is provided with a circular arc structure 256, the automobile steering knuckle 1 is provided with a center hole 15, and the circular arc structure 256 is arranged around the center hole 15.

[0045] Specifically, when the third section 255 abuts against the top wall of the automobile steering knuckle 1, the circular arc structure 256 of the third section 255 is matched with the center hole 15 of the automobile steering knuckle 1, and the circular arc structure 256 is circumferentially attached to the center hole 15 and abuts against the automobile steering knuckle 1, so that the acting force between the clamping device 25 and the automobile steering knuckle 1 is more balanced, and the automobile steering knuckle 1 can be more stably clamped.

[0046] The utility model is described above by way of example, but the utility model is not limited to the above specific embodiments, and any modification or change based on the utility model belongs to the range required to be protected by the utility model.

Claims

1. An automobile steering knuckle machining positioning fixture, characterized in that, The automobile steering knuckle comprises a main body and a main arm, and the machining positioning clamp comprises a base, a supporting seat, a centering piece, a positioning device and a clamping device, the supporting seat is arranged on the base, the centering piece is arranged in the supporting seat, the inner wall of the supporting seat is attached to the outer wall of the centering piece, the centering piece is provided with a tapered hole, the main body is provided with a tapered structure, the tapered structure extends into the tapered hole, the inner wall of the tapered hole is attached to the outer wall of the tapered structure, the bottom wall of the automobile steering knuckle is in abutment with the upper end surface of the supporting seat, the supporting seat is internally provided with an elastic piece, one end of the elastic piece is in abutment with the centering piece, and the other end is in abutment with the bottom of the supporting seat, the positioning device and the clamping device are arranged on the base, the positioning device is configured to be connected with the main arm, and the clamping device is used for fixing the main body.

2. The machining fixture for positioning the automobile steering knuckle according to claim 1, wherein Further comprising a guide limiting column, the guide limiting column is arranged on the side wall of the supporting seat, extends into the supporting seat from the outside to the centering piece, the centering piece is provided with a limiting groove, and one end of the guide limiting column towards the centering piece is clamped into the limiting groove to limit the centering piece.

3. The machining fixture for positioning the automobile knuckle according to claim 1, wherein The supporting seat is circumferentially provided with a chip removal hole, the centering piece is provided with a chip removal cooperation hole, and the chip removal hole and the chip removal cooperation hole are correspondingly arranged, which are used for discharging waste chips in the automobile steering knuckle machining process.

4. The machining fixture for positioning the automobile knuckle according to claim 1, wherein The supporting seat is provided with a limiting socket, the automobile steering knuckle is provided with a limiting part, the limiting part is clamped into the limiting socket to limit the automobile steering knuckle.

5. The machining fixture for positioning the automobile steering knuckle according to claim 1, wherein The bottom of the centering piece is provided with an extension structure, which extends towards the direction close to the bottom of the supporting seat and extends into the elastic piece.

6. The machining fixture for an automobile knuckle according to any one of claims 1 to 5, characterized in that, The positioning device comprises a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are oppositely arranged, the end of the main arm is provided with a through hole, the first fixed plate and the second fixed plate are both provided with a threaded hole corresponding to the through hole, and a bolt is sequentially arranged in the threaded hole and the through hole to fix the automobile steering knuckle.

7. The machining fixture for an automobile knuckle according to any one of claims 1 to 5, characterized by The number of the positioning device is two, and the two positioning devices are oppositely arranged.

8. The machining fixture for an automobile knuckle according to any one of claims 1 to 5, characterized by The clamping device comprises a pressing plate and a fixing bolt, the fixing bolt extends to the base after being arranged in one end of the pressing plate and is fixedly connected with the base, the other end of the pressing plate extends above the automobile steering knuckle and is configured to be in abutment with the automobile steering knuckle to clamp the automobile steering knuckle.

9. The machining fixture for positioning the automobile knuckle according to claim 8, wherein The pressing plate comprises a first segment, a second segment and a third segment, the first segment is provided with a through hole, the fixing bolt is arranged in the through hole, one end of the second segment is connected with the first segment and the connection forms a bend, the other end extends along the vertical direction and is connected with one end of the third segment and the connection forms a bend, the other end of the third segment extends along the horizontal direction and one side is in abutment with the top wall of the automobile steering knuckle.

10. The machining fixture for positioning an automobile knuckle according to claim 9, wherein The other end of the third segment is provided with a circular arc structure, the automobile steering knuckle is provided with a center hole, and the circular arc structure surrounds the center hole.

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